BIOLOGY

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Author:
amiss5572
ID:
195994
Filename:
BIOLOGY
Updated:
2013-01-28 15:03:13
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bio
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bio
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  1. After observing an event, you develop an explanation. This statement is referred to as which of the following?
    hypothesis
  2. a statement or explanation of certain events or happenings
    hypothesis
  3. a repeatable procedure of gathering data to support or refute the hypothesis
    experiment
  4. the most significant aspect of water is
    the polarity of its bonds
  5. A molecule of water is bonded with another molecule of water by what type of bond?
    hydrogen
  6. most significant molecules
    carbs, lipids, proteins and nucleic acids
  7. long chains, or polymers, of sugars. storage, structure and energy
    carbohydrates
  8. fats
    lipids
  9. contain no double bonds in their hydrocarbon tail. are solid
    saturated fats
  10. have one or more double bonds. are liquid at room temp.
    unsaturated fats
  11. a lipid. precursors to significant hormones
    steroids
  12. polymers of 20 molecules called amino acids
    proteins
  13. is used in transfer and as a messanger for the genetic cods
    RNA
  14. sum of all chemical reactions that take place
    metoblism
  15. in a cell, reactions take place in a series of steps called ___ progessing from a standpoint of high energy to low energy
    metabolic pathways
  16. contain all the material for the regeneration of the cell
    chromosomes
  17. organelles that read the RNA produced in the nucleus and translate the genetic instructions to produce proteins
    ribosomes
  18. attached to nucleur membrane.
    endoplasmic reticulum
  19. packaging, processing and shipping organelle
    golgi apparatus
  20. digestion
    lysosmes
  21. many cells, through a process called ___ uptake food through the cell membrane creating a food vacuole
    phagocytosis
  22. produce energy: __ found in eukaroyotic cells and are the site of respiration
    mitochondria
  23. ___ found in plants and are the site of photosyntheis
    chloroplasts
  24. most important of a cell. contributes to protection, communication, and passage of substances
    cellular membrane
  25. cellular respiration:

    first step is conversion of glucose to pyruvate in a process called ___.

    it produces __ molecules of ATP

    the second step is called __ and takes place in the __ of the cell

    for every glucose molecule _____ ATP molecules
    glycolysis

    2

    krebs cycle. matrix

    28-32
  26. reproduction from bacteria cells
    binary fission
  27. asexual reproduction forms two seperate identical cells
    mitosis
  28. sxual reproduction. gaploid gametes. four cells half as many chromosomes
    meisos
  29. both alleles are the same type
    homozygous
  30. is both alleles are different
    heterozygous
  31. RR
    homozygous dominant
  32. Rr
    heteroyzgous
  33. DNA double helical structure contains:
    adenine, thymine, guanine and cytosine
  34. DNA replication begins with __
    transcription.
  35. an RNA strand complimentary to the origincal strand of DNA is produced

    the piece of genetic material produced is called.
    uses __ instead of thymine
    transcription

    mRNA-messenger

    uracil
  36. what biologic macromoecules most important to cellular membrane?
    phospholipids
  37. what is the probability that a recessive trait would be expressed in offspring if two parents who are both heterozygous for the desired trait were crossed?
    25%

    punnet square Rr Rr
  38. in which organelle does transcription begin?
    nucleus
  39. site of translation
    ribosomes
  40. In a cell, reactions take place in a series of steps called:
    metabolic pathways
  41. What is the primary purpose of the flagella on the surface of cells?
    movement
  42. Which step in cellular respiration yields the greatest amount of ATP?
    krebs
  43. At which phase of meiosis does crossing over occur?
    prophase I
  44. During protein synthesis, what process uses an RNA strand to produce a complementary strand of DNA?
    transcription
  45. which cellular process results in the formation of sugar from carbon dioxide
    calvin cycle
  46. where are baroreceprots located
    aorta
  47. divided into four lobes
    liver
  48. which vessel transports blood from the lung to the heart?
    pulmonary vein
  49. function of the pulmonary veins is to carry
    oxygenated blood to the left atrium
  50. a piploid germ cell containing 72 chromosomes udergoes meiosis. how many chromosomes each gamete have?
    36
  51. chemical reactions in living systems proceed along catabolic pathways and there tends to be an increase in
    entropy
  52. what are acids
    hydrogen donors

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